Sharpening or cutting machine.



N'0.ss5,020. PATENTED APR.21, 1908..

SHARPENING OR CUTTING MACHINE. APPLIOATIQN FILED MAY 22, 1907.

2 SHEETS-SHEET 2.

l/Vi in moan LURENE CORY, OF GILMAN CITY, MISSOURI.

SHARPENING OR CUTTING MACHINE.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed May 22, 1907. Serial No. 375,084. 1

To all. whom it may concern:

Be it known that I, LURENE CORY, 'a citizen of the United States,residing at Gilman.

City, in the county of Harrison and State of Missouri, have inventedcertain new and use ful Improvements in sharpenin or Cutting Machines;and I do hereby dec are the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to new and useful improvements in cutting machines,and more particularly to that class adapted to be employed for cuttingtools and the like, and my object is to provide a machine of this classwhereby the tools may be sharpened, or

arts thereof cut away toform cutting edges.

A further object is. to provide means. for holding the cutting device inengagement with the tool being sharpened, and a still further object isto provide means for disconnecting the driving mechanism from thecutting mechanism. 1

Other ob 'ects and advantages will be hereinafter referred to and moreparticularly pointed out in the claims.

In the accompanying drawin s which are made a part of this application,,igure 1 is a front elevation of my improved sharpening or cuttingmechanism. Fig. 2 is an end elevation thereof. Fig. 3 is a rearelevation, and, Fig. 4 is an elevation of the opposite end of themachine from that shown in-Fig. 2.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, 1 indi cates the frameof my improved sharpenin or cutting mechanism, upon which is rotata blymounted a driving shaft 2, said shaft having secured thereto a beltpulley 3, by which means power is transmitted from any suitable sourceto the driving shaft Fixed to the shaft 2 is a sprocket wheel 4, aroundwhich takes a sprocket chain 5, also encompassing a driving sprocketwheel 6 on an auxiliary driving shaft 7, said shaft also being rotatablymounted upon the frame 1.

In sharpening disks, such as are used in connection with harrows, plows,drills, and

the like, it is preferable to cut away portions of the metal around theperiphery of the disk, and to this end, I provide a shaft 8, which isrotatably mounted on the upper portion of the frame 1, and is providedat its inner end with a bevel gear 19, with which is adapted to mesh abevel pinion 10, carried by a shaft 1 1, said shaft beindirected atright anglesto the. shaft 8, an is provided at its outer end with abalance wheel 12.

Motion is imparted to the shaft 11 through the medium of a sprocketchain 13, which is passed around sprocket wheels 14 and 15 on the.shafts 7 and 11, respectively. The shaft 8 extends beyond one end of theframe 1, and the extended end thereof is adapted to receive a disk 16,and the disk is held in position on the shaft 8 by means of a bindingnut 17 said nut being threaded onto the end of the shaft, and isoperated by means of a wrench 18, and it will be seen that by providingthe form of wrench shown, the nut can be quickldirected onto or off ofthe shaft.

Pivotal y mounted at one end of the frame 1 is a rocking shaft 19, tooneend of which is fixed an arm 20, upon which is slidably mounted a weight21. The shaft 19 has fixed thereto, and adjacent its opposite end,

a socket 22, through which is disposed a bar 23, said bar beinadjustably held in the socket by means of a bolt 24, the upper end ofsaid bar being curved outwardly and upwardly to form a head 25, saidhead having a bore 26 therethrough, in which is seated a cutting tool27, the cutting edge of which is so disposed as to engage the peripheraledge of the disk, the weight 21, when pro erly disposed on the arm 20,holding the e go of the cutting tool 27, in engagement with the edge ofthe disk.

If at any time it should become necessary .to disconnect the drivingmechanism from the cutting is rotatably fixed to the shaft 7, andslidably mounted thereon, and is provided at one end with teeth 29,which are adapted to enter notches 30 in the face of the hub of thesprocket wheel 14. I

The clutch 28 is moved into or outof engagement with the hub of thesprocket 14 by means of a lever 31, one end of which is bifurcated toreceive therebetween one end of the clutch 28, and this end of the leveris pivotally secured to a strap 32, one end of which is fixed to theframe 1, and the opposite end thereof to. a rod 33, and it will be seenthat the clutch may be quickly moved out of engagement with the sprocket14 by operating the handle portion of the lever 31, and returned intoengagement with the sprocket mechanism, a suitable clutch 28 14, bydisposing a spring 34 between a collar 35 on the shaft 7 and the freeend of the clutch 28, the spring normally holding the clutch inengagement with the sprocket. The shaft 8 is also provided with a clutch36, which is operated by a lever 37 to. release the clutch and therebystop the rotation of the shaft 8, a spring 38 being employed to normallyhold the clutch in its closed position.

When edge tools, such as axes, chisels, or the like, are to besharpened, I provide an emery wheel, or the like, 39 which is mountedupon a shaft 40 carried by the upper end of the frame 1, and in order todrive said shaft, a pulley 41 is secured thereto, around which passes abelt 42, also encompassing a pulley 43 carried by the driving shaft 2,and when, the emery wheel is'not to be used, the belt 42 is removed fromthe pulley 43, thereby allowing the emery wheel to remain idle. Afterthe disk 16 has been properly shar ened, the weight 21 is moved inward ytowards the shaft 19 or entirely removed from the arm 20 as best suitedto the operation, thereby allowing the shaft 19 to rock and remove thetool 27 from engagement with the disk 16 and in order to facilitate thisresult, a shank 44 is secured to the bar 23 immediately above the socket22 and has secured to its inner end a spring 45 which is in turn securedto theframe 1 above the shank 44, and it will be seen that as soon asthe weight has been removed from the outer end of the arm 20, the spring45 will contract and move the tool 27 out of engagement with the disk'The shank 44 may also be extended beyond the bar 23 so that the same maybe grasped and the tool 27 manually removed from engagement with thedisk.

It will thus be seen that I have very convenient form of device forsharpening various tools, and it will further be seen that the power maybe readily disconnected from the cutting desired.

What I claim is:

A machine of the character described, comprising a rock-shaft providedwith a provided a socket-equipped arm and means for the re tentiontherein of a tool-carrying member, a fulcrumed member or lever adaptedto cngage the socket of said arm from above, lat erally of thetool-carrying member, said rock-shaft having extending downwardlypressed arm, and a resilient member connected to, and adapted to pullupwardly upon said fulcrumed member or lever for causing the latter topress downwardly upon said socket.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

R. S. ALsBURY, GEO, S. GUsEwELLE.

portions of the device when A therefrom a I

